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- Title
SEISMIC LOADS NUMERIC CALCULATION FOR A NUCLEAR CLASS 2 PIPING SYSTEM.
- Authors
IOAN, CALIMANESCU; LIVIU-CONSTANTIN, STAN
- Abstract
Due to its location, seismic activity is common in Romania and earthquake engineering is a well known subject. Earthquake risks maps have been constructed to predict the ground acceleration in different parts of the country. All structures, including pipeline systems, are designed according to a particular design code. In particular for NPP of Cernavoda, the ASME Sect.III design code (App. N) may be used in structural earthquake design. Significant increased cost is involved in the design, making and installation of structures where seismic loading is taken into account. In particular, the supports for piping systems are made bigger and stiffer to withstand the loading. Therefore, it is of utmost importance to have a simple standard procedure for seismic design/verification of piping systems. The focus here is on the seismic loads calculation for a Nuclear Class 2 piping system. The proposed FE model was developed inside the Piping Module of ANSYS, with 197 elements and 214 nodes, the pipe runs and the valve were modeled using Pipe 16 element type, the elbows with Pipe 18 Element type and the Snubbers and Spring hangers with Combin 14. The computed model showed good results and behaviour as far as the static loads are concerned but failed to pass the Seismic response analysis.
- Subjects
EARTHQUAKES; EARTHQUAKE engineering; PIPELINES; EARTHQUAKE hazard analysis; EARTHQUAKE resistant design; SEISMIC response
- Publication
Annals (Constanţa Maritime University), 2013, Vol 14, Issue 19, p91
- ISSN
2067-0427
- Publication type
Article